Lauren Young produced the ride of the day to guide Letsbefrank to a third win of the series and another bumper payday.
Winner of the bonus in 2024, he was 2 lb higher than when securing his third success that season, but was perfectly prepared by Jim Goldie to make a mockery of that mark.
Slowly away, Young had no option but to bide her time, however she nursed the six-year-old into the lead approaching the final furlong, and had enough in hand to see off favourite Campeona.
As a result, his owner Stuart Morrison picked up a cheque for £100,000 for the connections of any horse who wins three in the series. Letsbefrank's other wins came at Musselburgh and Hamilton.
Young told Racing TV: "You've only got one option on how to ride him - he fell out the gates and you have to leave him be.
"He's done it easy in the end.
"He's no bother really, but the [strong pace] definitely helped. It's actually an improvement from last year – there's no point rushing him forward.
"He does have a turn of foot, you just have to get him to switch off.